/*
 * Copyright 2016-2022 chronicle.software
 *
 *       https://chronicle.software
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.openhft.chronicle.core.util;

import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;

public class SimpleCleaner {
    private static final AtomicIntegerFieldUpdater<SimpleCleaner> CLEANED_FLAG =
            AtomicIntegerFieldUpdater.newUpdater(SimpleCleaner.class, "cleaned");

    private final Runnable thunk;
    @SuppressWarnings("unused")
    private volatile int cleaned = 0;

    public SimpleCleaner(Runnable thunk) {
        this.thunk = thunk;
    }

    public void clean() {
        if (CLEANED_FLAG.compareAndSet(this, 0, 1))
            thunk.run();
    }
}
